Dependency Injection on Authorization Policy

Question

I want to create a claim based authorization for my ASP.NET Core app:

public void ConfigureServices(IServiceCollection services)
{
    services.AddAuthorizat         


        

Answer 1

To supplement the provided answer by @MichaelShterenberg, the configuration delegate can use a IServiceProvider to allow for additional dependencies

public static IServiceCollection AddAuthorization(this IServiceCollection services,
    Action configure) {
    services.AddOptions().Configure(configure);
    return services.AddAuthorization();
}

Which, based on the original example, can be used

public void ConfigureServices(IServiceCollection services) {

    //...

    service.AddScoped();

    services.AddAuthorization((options, sp) => {
        IEmployeeProvider employeeProvider = sp.GetRequiredService();
        options.AddPolicy("Founders", policy =>
            policy.RequireClaim("EmployeeNumber", employeeProvider.GetAuthorizedEmployeeIds())
        );
    });

    //...
}

If there were other dependencies needed, they could be resolved from the service provider.